Twentieth Century — The

: Mass movements for equality, including women's suffrage and the civil rights movement , marked significant milestones in human rights and personal identity.

: Major inventions such as planes, computers, and space exploration changed daily life worldwide and influenced the course of history. Thematic Areas of Inquiry The Twentieth Century

To explore this era effectively, historians recommend focusing on the " five C's of historical thinking ": change over time, causality, context, complexity, and contingency. American Community Survey Information Guide - Census Bureau : Mass movements for equality, including women's suffrage